Astroserver

Astroserver is a private company registered in the European Union and based in Malomsok, Hungary. It operates as a specialist research-services provider for observational astrophysics, selling scientific and technical services rather than consumer products. Its core offering is stellar atmosphere modeling and the generation of synthetic spectra for O, B and A type stars, hot subdwarfs and white dwarfs, together with multi-wavelength spectroscopic fitting performed with the XTgrid tool using Tlusty, CMFGEN, Atlas and Phoenix model atmospheres. Around this core the company has built a portfolio of related services: target classification in large-area surveys and multi-object spectroscopy, precision spectroscopy of individual stars, binaries (including proposal blocks for spectral disentangling) and triple or higher-order systems, high-performance CPU-optimized computing, spectroscopic data reduction with IRAF, data-mining techniques, code development and optimization support in Fortran, C and Python, proposal writing and proofreading, service observing in visitor mode, animation and media content production with Blender and Gimp, and general consulting and webpage maintenance. The company presents itself as a small, community-oriented team. Its website invites visitors to complete a short survey, and it lists partner institutes, indicating collaborative work with academic astronomy groups. It is identifiable in research infrastructure registries: the site lists an ISNI ID (000000052380210X), a Ringgold ID (712157) and a ROR ID (02h2fxd91), and the copyright notice on the site runs from 2015 to 2026, consistent with a company founded around 2015. Wikidata describes it simply as a company in Malomsok, Hungary. Astroserver's public profile is closely tied to its scientific output. Its homepage highlights recent refereed projects, including orbital and atmospheric parameters of the O-type subdwarf binaries BD-11° 162 and Feige 80 (A&A, 2022), an 18.9-minute blue large-amplitude pulsator crossing the Hertzsprung gap of hot subdwarfs (Nature, 2023), a study of three B supergiant stars PU Gem, ϵ CMa and η CMa (Galaxies, 2023), a seven-Earth-radius helium-burning star inside a 20.5-minute detached binary (Nature Astronomy, 2024) and the double low-mass white dwarf eclipsing binary J2102-4145 (A&A, 2024). These projects illustrate the niche the company occupies: high-resolution spectroscopy and asteroseismology of compact and evolved stars, often in binary systems. On the software side, Astroserver has released the XTgrid Sandbox and XTgrid Live, self-service online tools for stellar spectral analysis with Tlusty, CMFGEN or Atlas models, and it lists several capabilities as under development, including spectral analysis of massive stars with CMFGEN, spectral disentangling of triples and higher-order multiples, Galactic orbit calculations and stellar kinematics from Gaia data, atomic diffusion in the atmospheres of compact stars, and TELLER, a telluric correction tool. The company therefore combines a consulting and modeling practice with a small software-platform business aimed at professional astronomers.

Astroserver is a private company registered in the European Union and based in Malomsok, Hungary. The copyright notice on its website runs from 2015 to 2026, indicating that the business was established around 2015. Wikidata records it simply as a company in Malomsok, Hungary, and the company itself describes its mission as providing research services to the astronomical community. From its beginnings the company has focused on stellar spectroscopy and atmosphere modeling. Its service catalogue covers synthetic spectra for O, B and A type stars, hot subdwarfs and white dwarfs, and multi-wavelength spectroscopic fitting with the XTgrid tool using the Tlusty, CMFGEN, Atlas and Phoenix model atmospheres. Over time the company added adjacent capabilities: target classification in large-area surveys and multi-object spectroscopy, precision spectroscopy of individual stars, binaries and higher-order multiple systems, high-performance CPU-optimized computing, spectroscopic data reduction with IRAF, data-mining techniques, code development and optimization support in Fortran, C and Python, proposal writing and proofreading, service observing in visitor mode, and animation and media content production with Blender and Gimp. A significant step in the company's development was the move into self-service software. Astroserver released the XTgrid Sandbox and XTgrid Live for testing, allowing users to perform online stellar spectral analysis with Tlusty, CMFGEN or Atlas models. It also lists several capabilities as under development: spectral analysis of massive stars with CMFGEN, spectral disentangling of triples and higher-order multiple star systems, Galactic orbit calculations and stellar kinematics from Gaia data, atomic diffusion in the atmospheres of compact stars such as white dwarfs and hot subdwarfs, and TELLER, a telluric correction tool. The company's scientific work is documented through refereed publications highlighted on its homepage. These include a 2022 Astronomy & Astrophysics paper on the orbital and atmospheric parameters of the O-type subdwarf binaries BD-11° 162 and Feige 80; a 2023 Nature paper on an 18.9-minute blue large-amplitude pulsator crossing the Hertzsprung gap of hot subdwarfs; a 2023 Galaxies paper on the evolutionary state of the B supergiants PU Gem, ϵ CMa and η CMa; a 2024 Nature Astronomy paper on a seven-Earth-radius helium-burning star inside a 20.5-minute detached binary; and a 2024 Astronomy & Astrophysics paper on the double low-mass white dwarf eclipsing binary J2102-4145. These projects place the company in the research niche of high-resolution spectroscopy and asteroseismology of compact and evolved stars, frequently in binary systems. Astroserver maintains a presence in research infrastructure registries, listing an ISNI ID (000000052380210X), a Ringgold ID (712157) and a ROR ID (02h2fxd91). It also refers to partner institutes and invites community feedback through a short survey on its website, reflecting its orientation toward collaborative academic work.

• 2024

  Publication in Nature Astronomy of a seven-Earth-radius helium-burning star inside a 20.5-minute detached binary.

• 2024

  Publication in Astronomy & Astrophysics of the double low-mass white dwarf eclipsing binary J2102-4145.

• 2023

  Publication in Nature of an 18.9-minute blue large-amplitude pulsator crossing the Hertzsprung gap of hot subdwarfs.

• 2023

  Publication in Galaxies on the evolutionary state of the B supergiants PU Gem, ϵ CMa and η CMa.

• 2022

  Publication of orbital and atmospheric parameters of the O-type subdwarf binaries BD-11° 162 and Feige 80 in Astronomy & Astrophysics.

• 2015

  Astroserver is established; the website copyright notice begins in 2015.

A niche, community-oriented private research-services provider for professional astronomy, combining stellar spectroscopy expertise with self-service online analysis tools.

• XTgrid Sandbox

  Self-service online stellar spectral analysis with Tlusty, CMFGEN or Atlas models; released for testing.

• XTgrid Live

  Online stellar spectral analysis service released for testing alongside the XTgrid Sandbox.

• TELLER

  A telluric correction tool listed as under development.

1. 1Astroserver.orgastroserver.org
2. 2Servicesastroserver.org
3. 3Astroserver (Hungary) - Wikidatawikidata.org